function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

/*******************************************************
 * Copyright (C) 2006 Blend Interactive, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 **********************************************************/
/**********************************************************
 * Blend Javascript Rollovers V 1.0.0
 *
 * To install: 
 * -- Include the script in the page: 
 * <script src="javascripts/rollovers.js" type="Javascript" />
 *
 * -- Create the rollover image pair with _off and _on in the names.
 * e.g. "home_off.gif" and "home_on.gif"
 *
 * -- Add the image tag with a class of "rollover":
 * <img src="images/home_off.gif" class="rollover" />
 *********************************************************/

var ROLLOVER_CLASSNAME = 'rollover';
var OFF_SUFFIX = '_off';
var ON_SUFFIX = '_on';

/**********************************************************
 * Here's the meat of the operation - this function sets 
 * up mouseover functions on all IMG tags with a 
 * classname of ROLLOVER_CLASSNAME.
 *********************************************************/
function enableMenuImageRollovers()
{
	var imgs = getElementsByTagAndClassName('img',ROLLOVER_CLASSNAME);
	
	for(var i = 0; i < imgs.length; i++)
	{
		var img=imgs[i];
		
		//Create a couple of new image objects.
		var imgOn = new Image();
		var imgOff = new Image();
		
		//Set their source (this triggers the browser to load them).
		imgOn.src=img.src.replace(OFF_SUFFIX,ON_SUFFIX);
		imgOff.src=img.src.replace(ON_SUFFIX,OFF_SUFFIX);
		
		//Bind them to the original image.
		img.imgOn = imgOn;
		img.imgOff = imgOff;
		
		//Switch to them on mouseover/mouseout.
		img.onmouseover=function() {
			this.src=this.imgOn.src;
		}
		
		img.onmouseout=function() {
			this.src=this.imgOff.src;
		}
	}

}

/**********************************************************
 * A handy utility function that lets you find elements 
 * with a certain className, which is a common need.
 * This will properly support cases where there are 
 * multiple class names assigned to an object.
 *********************************************************/
function getElementsByTagAndClassName(tagName, className)
{
	var items = new Array();
	var elems = document.getElementsByTagName(tagName);
	for(var i = 0; i < elems.length; i++)
	{
		var elem = elems[i];
		var classNames = elem.className.split(" ");
		for (var j = 0; j < classNames.length; j++)
		{
			if(classNames[j] == className)
			{
				items.push(elem);
			}
		}
	}
	return items;
}


/**********************************************************
 * The 'bootstrapper' that loads the behavior when the 
 * page loads. 
 * This will perform any existing onload functions, 
 * then execute the image rollover setup.
 *********************************************************/

if (window.onload)
{
	//Hang on to any existing onload function.
	var existingOnload = window.onload;
}

window.onload=function(ev){
	//Run any onload that we found.
	if (existingOnload)
	{
		existingOnload(ev);
	}
	
	//Don't bother loading unless getElementsByTagName is supported.
	if (document.getElementsByTagName)
	{
		enableMenuImageRollovers();
	}
};